Sintered body and high-frequency circuit component
AssigneeTDK Corporation
InventorsHidenobu Umeda, Taku Murase
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AssigneeTDK Corporation
InventorsHidenobu Umeda, Taku Murase
Estimating the term…
There is provided a sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite. The sintered body contains, as main components, a cobalt oxide, a copper oxide, an iron oxide and AO (AO is at least one of BaO or SrO) in predetermined amounts in mol %, more preferably contains MO (MO is at least one of NiO, ZnO or MgO) in a predetermined amount in mol % in addition to the above components, and also contains, as additional components, bismuth oxide (Bi2O3), borosilicate glass, borosilicate zinc glass or bismuth glass in predetermined amounts in wt %. Thus, a sintered body which exhibits good magnetic properties and is usable up to a high frequency band ranging from several hundred megahertz to gigahertz, contains as few hetero phases other than a Y-type hexagonal ferrite as possible and can be calcined at a temperature of not higher than 1,000° C., particularly about 900° C., and a high-frequency circuit component using the sintered body can be provided.
A sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite, the sintered body containing, as main components, a cobalt oxide in an amount of 3 to 15 mol % in terms of CoO, a copper oxide in an amount of 5.5 to 17 mol % in terms of CuO, an iron oxide in an amount of 57 to 61 mol % in terms of Fe2O3, and AO (AO is at least one of BaO or SrO) as the balance, and also containing 0.5 to 7 wt % of bismuth oxide (Bi2O3) as an additional component.
A high-frequency circuit component having the structure that a conductive body is embedded in a sintered body, wherein
A sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite, the sintered body containing, as main components, a cobalt oxide in an amount of 3 to 15 mol % in terms of CoO, a copper oxide in an amount of 5 to 17 mol % in terms of CuO, an iron oxide in an amount of 57 to 61 mol % in terms of Fe2O3, and AO (AO is at least one of BaO or SrO) as the balance, and also containing 0.6 to 7 wt % of borosilicate glass, borosilicate zinc glass or bismuth glass as an additional component.
A high-frequency circuit component having the structure that a conductive body is embedded in a sintered body, wherein
A sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite, the sintered body containing, as main components, a cobalt oxide in an amount of 3 to 15 mol % in terms of CoO, a copper oxide in an amount of 5 to 17 mol % in terms of CuO, an iron oxide in an amount of 57 to 61 mol % in terms of Fe2O3, 0 to 15 wt % of MO (MO is at least one of NiO, ZnO or MgO, the content of MO would never be 0), and AO (AO is at least one of BaO or SrO) as the balance, and also containing 0.5 to 7 wt % of bismuth oxide (Bi2O3) as an additional component.
A high-frequency circuit component having the structure that a conductive body is embedded in a sintered body, wherein
A sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite, the sintered body containing, as main components, a cobalt oxide in an amount of 3 to 15 mol % in terms of CoO, a copper oxide in an amount of 5 to 17 mol % in terms of CuO, an iron oxide in an amount of 57 to 61 mol % in terms of Fe2O3, 0 to 15 wt % of MO (MO is at least one of NiO, ZnO or MgO, the content of MO would never be 0), and AO (AO is at least one of BaO or SrO) as the balance, and also containing 0.6 to 7 wt % of borosilicate glass, borosilicate zinc glass or bismuth glass as an additional component.
A high-frequency circuit component having the structure that a conductive body is embedded in a sintered body, wherein
Dependencies are inferred from the claim text.